A terror suspect allegedly linked to the Ujain train blast opened fire at security forces in Thakurganj area of Lucknow, on Tuesday afternoon. The Uttar Pradesh Anti Terror Squad is currently engaged in an operation in Thakurganj area of Lucknow. The area is among the densely populated areas of Lucknow. Security officials had to fire tear-gas shells into the house where the suspect is holed up. The suspect has been identified as Saifullah but there was no official confirmation of the same. Police said they were suspecting just one person to be holed up inside the house, but they have not ruled out the possibility of there being more individuals.